CN107218090B - A kind of steam turbine ground low-pressure internal cylinder structure - Google Patents
A kind of steam turbine ground low-pressure internal cylinder structure Download PDFInfo
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- CN107218090B CN107218090B CN201710601091.8A CN201710601091A CN107218090B CN 107218090 B CN107218090 B CN 107218090B CN 201710601091 A CN201710601091 A CN 201710601091A CN 107218090 B CN107218090 B CN 107218090B
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- internal cylinder
- low
- pressure internal
- ram
- horn
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a kind of steam turbine ground low-pressure internal cylinder structures, including support construction, longitudinal and transverse direction sliding pin device, low-pressure internal cylinder lower half split flange, preceding ram's horn and rear ram's horn；The support construction includes two front support seats of low-pressure internal cylinder front end and two rear supports of rear end；The back and front supporting seat supports are on the basis of steam turbine operation platform；The low-pressure internal cylinder lower half split flange stretches out ram's horn after two preceding ram's horns and two, overlaps respectively with two front support seats and two rear supports；The longitudinal direction sliding pin device is arranged on the positioning key and registration arm of the forward and backward lower part of low-pressure internal cylinder；The transverse direction sliding pin device is arranged in front of low-pressure internal cylinder on ram's horn and front support seat.Deformation when the landing arragement construction improves low-pressure internal cylinder rigidity of support and reduces operation, enhances stability, avoids in unit running process, and influence of the outer shell to low-pressure internal cylinder center improves the safety of steam-turbine unit operation.
Description
Technical field
The present invention relates to steam turbine low-pressure inner casing, specifically a kind of steam turbine ground low-pressure internal cylinder structure.
Background technique
Conventional low cylinder arrangement is that inner casing is located on outer shell.On the one hand, since lp outer casing is steel plate welding knot
Structure, cylinder is rigidly poor, and unit is easy to produce deformation after running for a long time；On the other hand, inner casing is located on outer shell, due to vacuum
The influence of power and outer shell expanded by heating can all make low-pressure internal cylinder center generate offset, cause unit dynamic and static gaps to occur irregular
Change, influences the stability and safety of unit operation.
Summary of the invention
The purpose of the present invention is to solve above-mentioned technical problems, provide a kind of steam turbine ground low-pressure internal cylinder structure, should
Deformation when landing arragement construction improves low-pressure internal cylinder rigidity of support and reduces operation, enhances stability, avoids machine
In group operational process, influence of the outer shell to low-pressure internal cylinder center improves the safety of steam-turbine unit operation.
It realizes the technical scheme is that a kind of steam turbine ground low-pressure internal cylinder structure, it is characterised in that: including support
Structure, longitudinal and transverse direction sliding pin device, low-pressure internal cylinder lower half split flange, preceding ram's horn and rear ram's horn；The support construction packet
Include two front support seats of low-pressure internal cylinder front end and two rear supports of rear end；The back and front supporting seat supports are in steam turbine
On the basis of operation platform；The low-pressure internal cylinder lower half split flange stretches out ram's horn after two preceding ram's horns and two, respectively with
Two front support seats and two rear support overlap joints；The longitudinal direction sliding pin device is arranged in the positioning of the forward and backward lower part of low-pressure internal cylinder
On key and registration arm；The transverse direction sliding pin device is arranged in front of low-pressure internal cylinder on ram's horn and front support seat.
The front support seat includes front support arm, embedded part, foundation bolt and pedestal；There is sliding slot in front support arm front end.
The rear support includes rear support arm, embedded part, foundation bolt and pedestal；The rear support arm front end has small flat
Platform.
The transverse direction sliding pin device is constituted with the front support arm front end sliding slot and preceding ram's horn on front support seat.
Ram's horn after described two preceding ram's horns and two, respectively with the clinch of two front support seats and two rear supports
Position, is respectively positioned on guide ring rear.
Ram's horn is overlapped on the chain-wales of the rear support arm front end in rear support after described, keeps it any on chain-wales
Direction sliding.
The longitudinal direction sliding pin device includes the positioning device in the foundation bottom embedment of steam turbine operation platform, positioning dress
The registration arm set protrudes into the aperture of low-pressure internal cylinder basis, and vertical direction convex key, the positioning with low-pressure internal cylinder bottom is arranged in front end
Keyway cooperation.
The overlapping part of the longitudinal direction sliding pin device and low-pressure internal cylinder is located at guide ring rear.
The beneficial effects of the present invention are:
1, deformation when present invention landing arragement construction improves low-pressure internal cylinder rigidity of support and reduces operation, enhances
Stability avoids in unit running process, influence of the outer shell to low-pressure internal cylinder center, improves the peace of steam-turbine unit operation
Quan Xing.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the embodiment of the present invention；
Fig. 2 is longitudinal direction of embodiment of the present invention sliding pin device structural schematic diagram；
Fig. 3 is low-pressure internal cylinder of embodiment of the present invention structural schematic diagram；
Fig. 4 is transverse direction of embodiment of the present invention sliding pin device structural schematic diagram；
Fig. 5 is front support of embodiment of the present invention holder structure schematic diagram；
Fig. 6 is rear support of embodiment of the present invention structural schematic diagram.
Figure label: 1-low-pressure internal cylinder, 2-front support seats, 3-rear supports, 4-registration arm, 5-guide rings, 6-
Basis, 7-split flanges, 8-preceding ram's horns, 9-rear ram's horns, 10-positioning keys, 11-front support arms, 12-embedded parts, 13-
Foundation bolt, 14-pedestals, 15-sliding slots, 16-rear support arms, 17-chain-wales.
Specific embodiment
It is as shown in Figures 1 to 6: a kind of steam turbine ground low-pressure internal cylinder structure, including support construction, longitudinal and transverse direction sliding pin
Device, 1 lower half split flange 7 of low-pressure internal cylinder, preceding ram's horn 8 and rear ram's horn 9；The support construction includes low-pressure internal cylinder front end
Two rear supports 3 of two front support seats 2 and rear end；The back and front supporting seat 2,3 is supported in the base of steam turbine operation platform
On plinth 6；The low-pressure internal cylinder lower half split flange 7 stretches out ram's horn 9 after two preceding ram's horns 8 and two, props up respectively with before two
It supports seat 2 and two rear supports 3 overlaps；The longitudinal direction sliding pin device is arranged in 10 He of positioning key of the forward and backward lower part of low-pressure internal cylinder 1
In registration arm 4；The transverse direction sliding pin device is arranged in front of low-pressure internal cylinder 1 on ram's horn 8 and front support seat 2.The front support seat 2 wraps
Include front support arm 11, embedded part 12, foundation bolt 13 and pedestal 14；There is sliding slot 15 in 11 front end of front support arm.The rear support
Seat 3 includes rear support arm 16, embedded part 12, foundation bolt 13 and pedestal 14；There are chain-wales 17 in 16 front end of rear support arm.It is described
Lateral sliding pin device is constituted with the 11 front end sliding slot 15 of front support arm and preceding ram's horn 8 on front support seat 2.Described two preceding cats
Ram's horn 9 after pawl 8 and two, respectively with the overlapping part of two front support seats 2 and two rear supports 3, after being respectively positioned on guide ring 5
Side, this arrangement not only can reduce the influence to steam discharge, can also protect sliding key system not by the erosion of steam flow.Cat after described
Pawl 9 is overlapped on the chain-wales 17 of 16 front end of rear support arm in rear support 3, keeps its any direction on chain-wales 17 sliding
It is dynamic.The longitudinal direction sliding pin device includes the positioning device being embedded in 6 bottom of basis of steam turbine operation platform, the positioning device
Registration arm 4 protrudes into basic 6 apertures of low-pressure internal cylinder, and vertical direction convex key, the positioning key with 1 bottom of low-pressure internal cylinder is arranged in front end
10 cooperations.
Claims (6)
1. a kind of steam turbine ground low-pressure internal cylinder structure, it is characterised in that: including support construction, longitudinal and transverse direction sliding pin device,
Low-pressure internal cylinder lower half split flange, preceding ram's horn and rear ram's horn；The support construction includes propping up before two of low-pressure internal cylinder front end
Support two rear supports of seat and rear end；The back and front supporting seat supports are on the basis of steam turbine operation platform；The low pressure
Inner casing lower half split flange stretches out ram's horn after two preceding ram's horns and two, respectively with two front support seats and two rear supports
Overlap joint；The longitudinal direction sliding pin device is arranged on the positioning key and registration arm of the forward and backward lower part of low-pressure internal cylinder；The transverse direction sliding pin dress
It sets before being arranged in low-pressure internal cylinder on ram's horn and front support seat；The transverse direction sliding pin device is by the front support arm front end on front support seat
Sliding slot and the cooperation of preceding ram's horn are constituted；Ram's horn is overlapped on the chain-wales of the rear support arm front end in rear support after described, makes it
Any direction slides on chain-wales.
2. steam turbine ground low-pressure internal cylinder structure according to claim 1, it is characterised in that: the front support seat includes preceding branch
Brace, embedded part, foundation bolt and pedestal；There is sliding slot in front support arm front end.
3. steam turbine ground low-pressure internal cylinder structure according to claim 1, it is characterised in that: the rear support is propped up after including
Brace, embedded part, foundation bolt and pedestal；There are chain-wales in the rear support arm front end.
4. steam turbine ground low-pressure internal cylinder structure according to claim 1, it is characterised in that: described two preceding ram's horns and two
Ram's horn afterwards is respectively positioned on guide ring rear respectively with the overlapping part of two front support seats and two rear supports.
5. steam turbine ground low-pressure internal cylinder structure according to claim 1, it is characterised in that: it is described longitudinal direction sliding pin device include
In the positioning device that the foundation bottom of steam turbine operation platform is embedded to, the registration arm of the positioning device protrudes into low-pressure internal cylinder basis and opens
In hole, vertical direction convex key is arranged in front end, cooperates with the positioning spline of low-pressure internal cylinder bottom.
6. according to claim 1 or the 5 steam turbine ground low-pressure internal cylinder structures, it is characterised in that: the longitudinal direction sliding pin device
It is located at guide ring rear with the overlapping part of low-pressure internal cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601091.8A CN107218090B (en) | 2017-07-21 | 2017-07-21 | A kind of steam turbine ground low-pressure internal cylinder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601091.8A CN107218090B (en) | 2017-07-21 | 2017-07-21 | A kind of steam turbine ground low-pressure internal cylinder structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107218090A CN107218090A (en) | 2017-09-29 |
| CN107218090B true CN107218090B (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710601091.8A Active CN107218090B (en) | 2017-07-21 | 2017-07-21 | A kind of steam turbine ground low-pressure internal cylinder structure |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986615B (en) * | 2019-12-23 | 2021-07-16 | 东方电气集团东方汽轮机有限公司 | Low-pressure inner cylinder ground steam turbine unit condenser throat structure |
| CN111946408A (en) * | 2020-09-01 | 2020-11-17 | 中国长江动力集团有限公司 | Novel cat claw structure for small steam turbine |
| CN114412593B (en) * | 2021-12-20 | 2023-07-18 | 东方电气集团东方汽轮机有限公司 | Wear-resistant and oxidation-resistant guide key structure, sliding pin system and assembly method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2467747A (en) * | 2009-02-12 | 2010-08-18 | Vector Int Ltd | A clamp |
| CN201714435U (en) * | 2010-04-02 | 2011-01-19 | 西安陕鼓汽轮机有限公司 | Steam turbine with swing supporting structure |
| CN102140940A (en) * | 2011-03-22 | 2011-08-03 | 东方电气集团东方汽轮机有限公司 | Low-pressure module landing structure of high-power half-rotating speed steam turbine unit |
| CN106401672A (en) * | 2016-11-01 | 2017-02-15 | 东方电气集团东方汽轮机有限公司 | Axial floor structure of low-pressure inner cylinder of steam turbine mechanism |
-
2017
- 2017-07-21 CN CN201710601091.8A patent/CN107218090B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2467747A (en) * | 2009-02-12 | 2010-08-18 | Vector Int Ltd | A clamp |
| CN201714435U (en) * | 2010-04-02 | 2011-01-19 | 西安陕鼓汽轮机有限公司 | Steam turbine with swing supporting structure |
| CN102140940A (en) * | 2011-03-22 | 2011-08-03 | 东方电气集团东方汽轮机有限公司 | Low-pressure module landing structure of high-power half-rotating speed steam turbine unit |
| CN106401672A (en) * | 2016-11-01 | 2017-02-15 | 东方电气集团东方汽轮机有限公司 | Axial floor structure of low-pressure inner cylinder of steam turbine mechanism |
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| CN107218090A (en) | 2017-09-29 |
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